How to use the split function on every row in a dataframe in Python?

Question

I want to count the number of times a word is being repeated in the review string

I am reading the csv file and storing it in a python dataframe using the below line

Answer 1

pandas 0.20.3 has pandas.Series.str.split() which acts on every string of the series and does the split. So you can simply split and then count the number of splits made

len(reviews['review'].str.split('disappointed')) - 1

pandas.Series.str.split